Pile-wire sharpener for looms.



No. 761,052. I PATENTED MAY 24, 1904. Q W. TUNSTALL.

PILE WIRE SHARPBNBR FOR LOOMS.

' APPLICATION FILED MAR. 18. 1904.

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No. 761,052. I PATENTED MAY 24, 1904.

' w. TUNSTALL. PILE WIRE s A PENBR FOR LOOMS.

APPLIUATI LED MAR. 18, 1904.

N0 MODEL. I 2 SHEETS-SHEET 2.

Im i i wl'nmm UNITED STATES Patented May 24, 1904.

PATENT OFFICE.

PENNSYLVANIA, ASSIGNOR TO OF PHILADELPHIA, PENN SYL- VANIA, ACORPORATION OF PENNSYLVANIA.

PlLE-WIRE SHARPENER FOR LOOMS'.

SPECIFICATION forming part of Letters Patent No. 761,052, dated May 24,1904.

Application filed March 18, 1904.

To all whom it may concern.-

Be it known that I, WILLIAM TUNs'rALL, a citizen of the United States,residing in Philadelphia, Pennsylvania,have invented Improvements inPile-Wire Sharpeners for Looms, of

which the following is aspecification'.

The object of my invention is to provide an effective device for thesharpening ofthe knives of pile-wires, which object I attain in themanner hereinafter set forth, reference being had to the accompanyingdrawings, in which- I Figure 1 is a view of suflicient of a loom toillustrate the application of my improved pile- 5 wire sharpenerthereto. Fig. 2 is a side elevation'of the sharpening device on a largerscale and showing part of the frame of the loom in section. Fig. 3 is aview of the sharpening device looking in the direction of the arrow,Fig. 2, and omitting the loom-frame. Fig. 4 is a view illustrating asimpler form of sharpening device than that shown in the other figuresof the drawings; and Figs. 5 and 6 are .respectively a plan view and afront view,

" 5 partly in section, of a further modification of the invention.

In Fig. 1 of the drawings part of the frame of the loom and part of theswinging lay are shown by dotted lines, said swinging lay hav- 3 ing anantifriction-roller 1, which acts upon a lever 2, hung to a standard 3,and also acted upon by a spring't, so that as the lay swings vibratingmovement will be imparted to the lever 2. Said lever is connected by alink 6 to a block 7 to which is secured a transverse head 8, havingbearings for the stem 9 of a file or other sharpening device 10, thelatter being free to rotate in said bearings, and the stem of thesharpener having at its lower end 4 aworm-wheel 11, which meshes with aworm 12 on a shaft or spindle 13, adapted to a hearing in a dependingbracket 14 on the head 8.

The shaft 13 has at its other end a ratchetwheel 15, which under certaincircumstances engages with a pawl 16, hung to a plate 17, which isrigidly mounted upon a bar 18 of the loom-frame, the pawl 16 being actedupon by spring 19 and having its forward movement Serial No. 198,743.(No model.)

I arrested by a pin 20 on said plate 17. The

upper end of the plate 17 has a curved slot 21 formed in it, and in thisslot travels an antifriction-roller 22, carried-by a bolt 23, which issecured to the upper end of the link 6, washers 2 1 and 25 beinginterposed, respectively, between the plate 17 and the head of the boltand between the said plate 17 and the upper end of the link 6, wherebyas the said link is raised and lowered by the action of the lever 2, theupper end of the link, and consequently the sharpening device 10 carriedthereby, is caused to move through a curved longitudinal path.

The sharpening device is intended to act upon the knife or cutter of theforemost pilewire as of the series which has been inserted in the web ofcloth which is being woven'just prior to the withdrawal of saidpile-wire from the web, and in order to insure proper contact of theknife with the sharpener the head 8 is provided with anupwardly-projecting bar or finger 26, preferably beveled at the upperend, which finger as the sharpening device is raised enters between theforemost pilewire a: of the series and the next adjoining pile-wire, andthus serves to press the said foremost pile-wire 92 against thesharpening device and prevent any deflection of the wire under theaction of the sharpener. By reason of. the curved slot 21 in the plate17 that portion of the sharpening device which is in contact with thecutting edge of the knife of the pile-wire is caused to pass over thesame in a curved path, which insures the effective sharpening of saidcutting edges and causes the sharpener to act on all portions of thesaid edge from its highest point down to the contracted throat betweenthe knife and the body of the wire. As the head 8 approaches the limitof its downward movement the ratchetwheel 15. is engaged by the pawl 16and through the medium of the worm and wormwheel imparts a slightmovement of partial rotation to the sharpening device'lO, so that thesurface presented by the same to the knives of the pile-wires isconstantly changing, and even wear of the sharpener is thereby insured.Such rotation offthe sharpener, however, is not essential to everyembodiment of my invention. For instance, in Fig. 4 I have illustrated aconstruction in which the stem of the sharpener is secured to the head 8by means of a set-screw 27, so as to be incapable of rotary movementexcept such as may be effected by hand after first loosening saidsetscrew, and other modifications of my invention within the scope of mybroader claims will readily suggest themselves to those skilled in theart to which said invention appertains.

One other modification is represented in Figs. 5 and 6, on reference towhich it will be observed that the link 6 acts upon a lever 30, hung toa stud 31, which'projects from a head 32, the latter being pivotallymounted upon a'lug 33, which is bolted to the loomframe. The lever 30has a pivotally-mounted head 3a, to which is secured a vertical spindle35, and. the latter is secured by means of a nut 36 to the tubularsharpening device, which may be composed of any available material.By'turning thcsharpener around its spindle different portions of thesame can be brought into action, a fresh surface being available as soonas one becomes worn. The same is true of the sharpener shown in Fig. i.As the lever 30 is vibrated by reason of its connection'with thelever 2the sharpening device is caused to swing in the are of a circle incontact with the pile-wire knife, adjustment of the sharpener from andtoward the knife being effected by swinging either the leverhead 34: orthe pivot-head 32 and securing the same in position after adjustment.Hence proper contact of the sharpener with the knives and properpressure of said sharpener against the knives can always be maintained.

- Having thus described my invention, I claim and desire to secure byLetters Patent 1. A pile-wire sharpener for looms, consisting of asharpening device and a movable carrier therefor, whereby saidsharpening device is caused to travel in contact with the cuttingsurfaceof the pile-wire knife, substantially as specified.

- 2. A pile-wire sharpener for looms, consisting of a sharpenlng device,and means whereby the same is caused to travel in a curved path incontact with the pile-wire knife, substantially as specified.

3. The combination, in a pile-wire sharpener for looms, of a' sharpeningdevice,-means for moving the same in contact with the pilewire knife,and means for mounting the sharpener. upon 1ts carrier, so that it isrotatable around its axis, substantially as speclfied.

4. The combination, in a pile-wire sharpener for looms, of a sharpeningdevice, means for moving the same in contact with the pilewire knife,and means for imparting intermittent movement of partial rotation to thesharpening device, substantially as specified.

. 5. The combination, in a pile-wire sharpener for looms, of asharpening device, means for moving the same in contact with thepilewire knife, and a support for preventing deflcction of the knifewhile the sharpener is acting thereupon, substantially as specified.

6. The combination, in a pile-wire sharpener for'looms, of a sharpeningdevice, means for moving the same in contact with the pilewire knife,and a finger movable with the sharpener and serving to bear against theback of the knife while the'sharpener is acting upon the face of thesame, substantially as specifled. I

7. The combination, in a pile-wire sharpener for-looms, of a sharpeningdevice, a carrier therefor, means for vertically reciprocating saidcarrier, and a guide-plate having a curved slot for engaging saidcarrier whereby the sharpener is caused to travel in a curved path,substantially as specified.

'8. The combination, ina pile-wire sharpener for looms, of a sharpeningdevice, a carrier in which said sharpener is mounted so as to be free torotate, means for moving said carrier so as to cause the sharpener totravel in contact with the'pile wire knife, and gearing, having aselements a ratchet and pawl, whereby movement of partial rotation isimparted to the sharpener as it approaches the termination of its travelin one direction, substantially as specified. 9. The combination, mapile-wire sharpener for loomspofthe sharpening device, a

movable carrier therefor, and means whereby movement'is imparted to saidcarrier from the swinginglay of the loom, substantially as specified. l

- 1,0. The combination, in a pile-wire sharpener for looms, ofthe'sharpening device, a movable carrier therefor, a lever hung to afixed member of the loom, a link connecting said lever to the carrierand a projection on the swinging lay for contact withsaid lever, sub- 3stantially as specified.

i In testimony whereof I have signed my name to this specificationin thepresence of two subscribing witnesses.

' WILLIAM TUNSTALL.

\Vitnesses:

FREDK. J KLEINI-IAUs, DAVID C. ANDERSON.

